Home / 15,421.44-21,281.76-9,049.44

Finding the Fourth Proportional to 15,421.44, 21,281.76 and 9,049.44

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Solution

The fourth proportional to 15,421.44, 21,281.76 and 9,049.44 is: 12,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.44 : 21,281.76 = 9,049.44 : x
  2. Step 2: Convert to fraction form
    15,421.44/21,281.76 = 9,049.44/x
  3. Step 3: Cross multiply
    15,421.44x = 21,281.76 × 9,049.44
  4. Step 4: Simplify right side
    15,421.44x = 192,588,010.21
  5. Step 5: Solve for x
    x = 192,588,010.21/15,421.44
  6. Step 6: Final answer
    x = 12,488.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.